in ReportBuilder, we want to pull data for all our Site Channels (eVar), so I created a named cell range "Sitechannels" with the Excel name manager and specified the lookup in ARB as "Specific / from range of cells" with the range "=Sitechannels".
I now updated the list of Site Channels and realized that the ARB did not update, as ARB "converted" my name range back to an absolut cell range, e.g. A1:45. So I have to update all requests (>30) with this lookup manually.
The expection is to make use of the Excel name function, so all updates of a lookup range will also be reflected in the ARB requests.